Connecting to MFA enabled Dynamics 365 CRM instance through console application

Hello Experts,

I'm trying to connect to dynamics 365 CRM instance through console application but getting 'Unable to login to CRM' error.

Here is my code.

System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
string connectionString = "AuthType=ClientSecret; url=myorg.crm.dynamics.com; ClientId=b77e2b5a-3946-485e-########; ClientSecret=s.tOrEuew_QTuGxV8Y0v4iTK######;

CrmServiceClient crmServiceClient = new CrmServiceClient(connectionString);
if (crmServiceClient != null && crmServiceClient.IsReady)
{
Console.WriteLine("\nConnection successful.");
}

I performed all the steps mentioned in this link:

https://nemely.com/blog/connect-to-multi-factor-enabled-d365-cds-programmatically-online-9-1/

Thanks,

Priyank